Cisco Systems (CSCO) - Get Cisco Systems, Inc. Report was up 6.5% in preopen Island trading after the company's announcement Wednesday it was discontinuing the optical routers it acquired last year with Monterey Networks.

The Internet gear manufacturer said slow sales had prompted it to discontinue the product, found at the core of optical networks. Rivals in the optical router market include

Ciena

(CIEN) - Get Ciena Corporation Report

,

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Lucent Technologies

(LU)

and

Nortel Networks

(NT)

. Ciena was up 9.8% preopen on the Island ECN.